摘要
荒漠化是当今最为严重的生态问题之一,开展荒漠化风险量化评估,有助于荒漠化风险调控,实现区域生态经济可持续发展。通过从气候、下垫面和社会经济等因素选取指标,构建吐鲁番市荒漠化风险评价体系,基于3S技术分析评估其2000—2018年的荒漠化风险程度,并采用地理探测器进行驱动力分析。结果表明:(1)2000—2018年吐鲁番市荒漠化风险变化较大,总体呈现出局部变差整体向好的趋势,东部荒漠化风险程度高于西部地区。(2)研究时段内吐鲁番市东部鄯善县的极高风险面积增加;西部托克逊县的极高风险范围得到控制,面积明显缩小;中部高昌区极低风险面积减少,低度风险分布较为稳定。(3)单因子驱动力:起沙风天数、第一产业GDP、降水量、生境质量指数、牲畜数量、平均气温6个因子对吐鲁番市荒漠化风险影响较大;在两两指标交互作用中,起沙风天数与第一产业GDP、降水量、生境质量指数、平均气温、牲畜数量的相互耦合是影响荒漠化风险的主要因素。
Desertification is one of the most severe ecological problems.The impact of desertification on ecology,production,and life cannot be ignored.Thus,establishing a desertification risk assessment system is essential to quantify the degree of desertification risk and control desertification risk,and achieve regional sustainable development.Based on 3S technology,this paper selects evaluation indicators from the human,underlying surface,and climatic factors to construct a desertification risk assessment system.It assesses and analyzes the desertification risk level of Turpan City,Xinjiang,China from 2000 to 2018.Additionally,the driving forces using geographic detectors are analyzed.The results are as follows.(1)The desertification risk area of Turpan City has significantly changed from 2000 to 2018,showing a trend of local deterioration and overall improvement.The desertification risk in the eastern region is higher than that in the western region.(2)The extremely high-risk area increased in Shanshan County during the study period.The extremely high-risk area is under control in Toksun County,which is significantly reduced.The extremely low-risk area in the central Gaochang District is reduced,and the low-risk distribution is relatively stable.(3)In the driving force analysis,the six index factors of sandstorm days,primary industry GDP,precipitation,habitat quality index,livestock quantity,and average temperature have a greater impact on the changes in desertification risk in Turpan City from 2000 to 2018.In the interaction between the two indicators,the coupling of sandstorm days with primary industry GDP,precipitation,habitat quality index,average temperature,and livestock quantity is the main factor promoting the desertification risk in Turpan City.
作者
孙桂丽
李雪
刘燕燕
郑佳翔
马婧
冉亚军
SUN Guili;LI Xue;LIU Yanyan;ZHENG Jiaxiang;MA Jing;RAN Yajun(College of Forestry and Landscape Archiecture,Xinjiang Agricultural University,Urumqi 830052,Xinjiang,China;Key Laboratory of Forestry Ecology and Industrial Technology in Arid Areas,Urumqi 830052,Xinjiang,China)
出处
《干旱区地理》
CSCD
北大核心
2022年第2期401-412,共12页
Arid Land Geography
基金
国家自然科学基金项目(41861046)
2021年三区人才项目资助。
关键词
荒漠化风险
动态变化
驱动力
吐鲁番市
desertification risk
dynamic changes
driving force analysis
Turpan City
